Coal carrying apparatus



May 31, 1960 T. NOGAMI 2,938,751

COAL CARRYING APPARATUS Filed Dec. 16, 1957 3 Sheets-Sheet 1 JWW INVENTOR ATTORNEY 1, 1960 T. NOGAMI 2,938,751

COAL CARRYING APPARATUS Filed Dec. 16, 1957 3 Sheets-Sheet 2 INVENTOR ATTORNEY y 1960 T. NOGAMI 2,938,751

COAL CARRYING APPARATUS Filed Dec. 16, 1957 3 Sheets-Sheet 3 Fig,4

INVENTOR ATTORNEY nited' States Patent COAL CARRYING APPARATUS Tatsunosuke Nogami, 29-6 Ichibancho, Chiyoda-ku, Tokyo, Japan Filed Dec. 16, 1957, Ser. No. 703,103

Claims priority, application Japan J nly 17, 1957 4 Claims. (Cl. 302-14) The present invention relates to a coal-carrying apparatus for carrying coal from the interior of a pit upward and to the surface.

It is an object of the present invention to provide an apparatus for carrying coal from the interior of a pit upward and to the surface efiiciently.

Another object of the present invention is to provide a coal-carrying apparatus in which the eificiency of carrying coal is increased by the use of pressure as the principal motive power and also by blowing air into the water.

It is a further object of the invention to provide a coal-carrying apparatus utilizing water flowing through a pipe from a high place on the surface of the ground into a pit at a lower place and thence to an outlet on the surface of the ground.

Yet another object of the present invention is to provide a coal-carrying apparatus having a valve which is operated by hydraulic, oil or air pressure at the orifice of the coal tank.

Another object of the invention is to provide an apparatus for direct fluid transportation of coal from a pit to the surface by employing a source of water under pressure directed from the surface into the pit and back with an auxiliary air-pressure hook-up used as secondary lifting means, the water means simultaneously providing motive power for agitation of the fluid coal-water mixture. 7

With these and other objects in view, as will hereinafter more fully appear, and which will be more particularly pointed out in the appended claims, reference is now made to the following description taken in 'connection with the accompanying drawings in which:

Fig. 1 shows a side view of the apparatus according to the present invention, partly in section;

Figure 2 is a magnified view of a part of Fig. 1, partly in section;

"Figure 3 is a side view of a coal introducingtank and of a coal tank according to the present invention.

Fig. 4 is a side view of another embodiment of the present invention. f

Referring now to the drawings wherein like reference characters designate like or corresponding parts throughout the several views, there is shown a vertically elongated upper tank 3 for coal introduction mounted over the upper part of an also vertically elongated lower coal tank 2. An inlet-pipe 4 for the introduction of water under pressure is fitted into the upper tank through its top. The upper tank has a narrow bottom terminating in a valve seat 5 with packing 40. The valve seat is controlled by a valve 7 reciprocating vertically by means of rod 6 attached to it with one end. The other end of the rod protrudes upwardly through the upper tank to connect with motive means 8 which cause it to reciprocate. The rod 6 passes through upper and lower bearings 37 and 38 respectively. A screen 39 is concentrically mounted within the upper tank. The coal tanks upper orifice matches the coal-introducing tanks ice adjoining valve-seat orifice for water-tight fitting. The coal tank has a narrowing bottom portion, elongated and curved sideways where it forms a vertical bottom orifice 1. Through the coal tank below its upper orifice is mounted a water-pressure pipe 9 which runs bent along the lower tanks wall and ends with an opening directed toward an impeller 11. Along the vertical axis of the coal tanks is rotatably mounted a shaft 10 having its upper and lower ends supported by bearings 34 and 35, respectively. The lower bearing 35 is shown separated from the lower tank. The impeller 11 is mounted on top of the shaft 10 and a propeller 36 in between its twov ends adjacent to the narrow bottom section of the lower tank.

The bottom orifice is provided with a valve seat 15 controlled by a reciprocating valve 17 mounted on one end of shaft 16. The shaft 16 is mounted for reciprocal movements in bearing plate and packing 22 and 20, respectively and protrudes through the end of the pipe 12 which is opposite to orifice 1 and where it is supported by bearing plate and packing 23 and 21 respectively, into a closed cylinder 25, operated by hydraulic, oil or air pressure, where it terminates with a piston 24, mounted to reciprocate within the hydraulic cylinder. Spring plates 18 and 19 are mounted on shaft 16 spaced adjacent to the valve 17 and bearing plate 19 respectively to limit the stroke of the rod 16. An inlet conduit 26 equipped with an accumulator 27 and an air pump 28 for compressed air forms an integral portion of pipe 13. In Fig. 3 complementary parts to the apparatus are shown, connecting pipes 9 and .14 by diverging conduits 33 equipped with valves 29, 30, a pressure reducing means 31 and a pump 32. The screen plate 39 has the purpose of stopping coal running into overflow. The valve 30 with the stub extending therefrom is a draining valve for excess Water.

- A plurality of coal tanks 2 and coal introducing tanks 3 are installed side by side from left to right the sides being identified the same as in the drawings. Water having a certain pressure flows under control from time to time through the pipe 14 in the direction of the arrow a of Fig. 1. When the valve 7 is closed coal is thrown into the coal-introducing tank 3 and under water. pressure is admitted into the tank 3 through pipe 4 at a desired time, when the vertical rod 6 is lowered so as to open the valve 7. Then coal falls with water out of the narrow part 5 of the coal-introducing tank 3 into the coaltank 2 which is gradually filled with coal and water. At this time, the valve 7 is closed and pressure water is introduced from the pipe 9. The water under pressure rotates the impeller -11 and the propeller 36 and the water and coal are pushed down by the rotating movement of the impeller 11. Furthermore, the water and coal become subjected. to a pulling action by the rotation of the propeller 36. I

As soon as the pressure in the coal tank 2 exceeds that in the pressure cylinder 25, the first-mentioned pressure opens, the valve 17 slightly. This movement cuts out the pressure in the pressure cylinder 25 for example by means of a relay switch. As soon as the valve 17 is fully opened, the coal and water flow into the pipe 14. The spring plates 18, 19 of the rod 16 are shaped to fit the packings 20, 21, of the control plates 22, 23, at the open position of the valve 17, thereby preventing the leakage of water and dust coal. Inasmuch as the pressure cylinder 25 is separated from the horizontal pipe 12, if a slight leakage occurs at the packings 20, 21, the escaped liquid fiows out of the pipe, having no effect on the operation of the pressure cylinder 25. As soon as the pressure of the air stored in the accumulator 19 overcomes the pressure in the pipe 14, the compressed air is blown into the vertical pipe Patented May 31, 1960 13 and pushes up coal in cooperation with the prmsure the electric current :sliould be cut off. Thecompressed' air blown 'into the vertical pipe as. a secondary means increases the lifting effect of the waterunder pressure.

' In Fig; 4 another embodiment of the presentinvention is illustrated, having an orifice 1, a coal'tank 2, a coalintroducing tank 3, pressure water pipes. ,4, 9; a. water pipe 14, a vertical pipe a compressed airfpipe '26 and an' accumulator 27 of" the same constructiorr' as the respective parts of the apparatus-shown in figs. 1 -3. A watcr-supply-pipe 42 leading to a' pipe *14 is connected through a pump 45v with a, water tank 46 located onthe surface of the earth 'and water'i's made to'flow constantly in pipe 14 which is extended into. arpit'and thence to an outlet 43' onthe ground; The water passes partly through the" coal tank 2 and the openingtl thereof ,andjoins, with, water running in theipipe 14. Through disclosure relates to only preferred embodiments of the invention and that numerous modifications or alterations may be made'therein without departing from the spirit and scope of the invention as set'forth in the appended claims.

U Iclaim:

1. A coal-elevating unit comprising in combination: a water under pressure source and conduit system, an upper hopper-type tank for introduction of coal, with a bottom orifice outlet, a water under pressure outlet directed into said upper tank, a lower coal tank having an'upper inlet orifice mounted underneath said upper tank adjoining the said lower. orifice of said upper tank, controllable valve'means for simultaneously shutting andopening the' adjoining said lowerorifice of said upper tank and" said upper orifice; of said lower tank; impeller means and agitator meansdriven by said impeller means mounted in said lower tank, awater under pressure conduit outletmounted' in. said bottom' tank adjoining said impeller as its motive, power; said lower tank'having'a narrowingbottom elongation curving sideways into' a vertical outlet, provided with a valve means" and their controls, ahorizontal section ofpipe of saidwaterunder pressure co'nduitsystem connected with said 'bottoin'tank bottom outlet.

2. A coal elevating unit asiclaimed in claim 1, said" valve means at the bottom outlet'of said bottom tank provided with a reciprocating rod mounted with one end to'said valve for control, spring plates and a piston mounted on said rod, said piston having its other end inserted in a pressure cylinder mounted from the horizontal pipe;

3. A coal-elevatingunitcomprising in combination: a source of compressed air with a conduit system, a water under pressure source and conduit system, an upper hopper-type tank for introduction of coal,,with a bottom orifice outlet, a water; under pressure outlet directed into said upper tank, a lower coal tank having an upper inlet orifice mounted adjoining the said lower orifice of said upper tank, controllable valve means for simulta- I neously shutting and opening the adjoining said lower orifice of said upper tank and said upper orifice of said lower tank, impeller means and agitator means driven by said impeller means mounted in said lower tank, a

, water under pressure conduit outlet mounted in said bottomtank adjoining said impeller as its motive power, said lower tankhaving a narrowing. bottom elongation curving sideways into a vertical outlet, provided with a valve'rne a'nsj and their controls, a horizontal. section of pipe of said water under pressure conduit system connected with said, bottom tank' bottom outlet, said compressed: airjcon duitm eans connecting with a vertical section of the said water underpressurerpipe past said bottom tank "bottom outlet, in. the directionof fluidfiow. 4. A coal-elevating unit comprising'in combination: a source of compressed airwith a conduit system; a water under pressure: source andconddit system; an upper hopper-type tank for'introduction of coal,with a bottom orifice outlet, a water under pressure. outlet directed intosaid'upper'tank; a lower coal tank having an upper inlet orifice mounted adjoining, the said lower orific'evof said l upper tank, controllable valve means forsimultaneously shutting and opening the adjoining said lower orifice of said upper" tank and said upper orifice of said lower tank;.impel ler means and agitator means driven by said impeller means mounted inrsaid lower tank; a water under pressure conduit-outletm'ounted in said bottom' tank adjoining said impeller as its motive power; said lower tank having ainarrowing bottom elongation curvingsideways into. avertical outlet provided with a valve means .and their controls; a horizontal section of pipe of said Water under pressure conduit system connectedwith said bottom tank bottom outlet; said compressed air conduit means connecting withla; vertical section ofthe saidlwater under pressure pipe past said bot: tom-tank bottom-outlet in the direction' of. fluid flow, said" compressed air conduit means connecting with an UNITED STATES PATENTS 91 4,4751 B'ed'uwe f 9, 1909 j FOREIGN PATENTS Y 110,609 Great Britain Oct. 2 6;,1911, 

